import Vue from 'vue'
import Router from 'vue-router'
import Login from './components/Login.vue'
import Home from './components/Home.vue'
import Welcome from './components/Welcome.vue'
import Users from './components/user/Users.vue'
import Rights from './components/power/Rights.vue'
import Roles from './components/power/Roles.vue'
import Cate from './components/goods/Cate.vue'
import Params from './components/goods/Params.vue'
import GoodsList from './components/goods/List.vue'
import Add from './components/goods/Add.vue'
import Order from './components/order/Order.vue'
import Report from './components/report/Report.vue'


Vue.use(Router)

const router = new Router({
    routes: [
        { path: '/', redirect: '/login' },
        { path: '/login', component: Login },
        {
            path: '/home',
            component: Home,
            redirect: '/Welcome',
            children: [
                { path: '/Welcome', component: Welcome },
                { path: '/users', component: Users },
                { path: '/rights', component: Rights },
                { path: '/roles', component: Roles },
                { path: '/categories', component: Cate },
                { path: '/params', component: Params },
                { path: '/goods', component: GoodsList },
                { path: '/goods/add', component: Add },
                { path: '/orders', component: Order },
                { path: '/reports', component: Report }
            ]
        }
    ]
})


//挂载路由导航守卫
router.beforeEach((to, from, next) => {
    //  to 将要访问的路径
    //  from代表从哪个路径跳转而来
    //  next是一个函数，表示放行
    //  next()放行      next('/login')强制跳转

    // 如果用户访问的是登录页，直接放行
    if (to.path === '/login') return next()
        // 从sessionStorage 中获取保存的token值
    const tokenStr = window.sessionStorage.getItem('token')
        // 没有token,强制跳转到登录页
    if (!tokenStr) return next('/login')
    next()
})

export default router